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Journal articles on the topic 'Cottus gobio'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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1

Florea, Luiza, Sorin Dorin Strătilă, and Mioara Costache. "The Assessment of Community Interest Fish Species from Protected Area Rosci0229." Transylvanian Review of Systematical and Ecological Research 16, no. 1 (May 1, 2015): 73–96. http://dx.doi.org/10.1515/trser-2015-0004.

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Abstract In the protected area ROSCI0229 Siriu were named three fish species of community interest: Gobio uranoscopus frici Vladykov, 1925, Barbus petenyi Heckel, 1847 and Cottus gobio Linné, 1758. Out of 193 fish collected in 2010, 49 were Barbus petenyi and 37 Cottus gobio. In the three monitored rivers (Buzău River, Siriu River, and Crasna River), Barbus petenyi was present in two of them and Cottus gobio was present in all of them. According to the analytical indices of population, frequency, numerical abundance and density we assessed a favorable population status for Barbus petenyi in Buzău River and a medium favorable population status for Cottus gobio in Buzău River and its tributaries Crasna River and Siriu River.

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2

Curtean-Bănăduc, Angela, Oana Danci, Răzvan Voicu, and Doru Bănăduc. "Cottus Gobio Linnaeus, 1758, Ecological Status and Management Elements in Maramureş Mountains Nature Park (Romania)." Management of Sustainable Development 9, no. 1 (June 1, 2017): 15–26. http://dx.doi.org/10.1515/msd-2017-0009.

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Abstract Cottus gobio is considered a fish species of conservation concern within the Vişeu Watershed. The habitats state, usually populated by Cottus gobio within the Maramureş Mountains Nature Park (Vişeu and Bistriţa Aurie watersheds) vary among reduced (34.42%), average (45.91%), and good (19.67%). The excellent conservation status is currently missing for populations of this fish in the Vișeu Basin. Human impact categories were inventoried as inducing the diminishment of Cottus gobio habitats and populations in the researched area in comparison with its natural potential are: minor riverbed morphodynamic changes, liquid and solid natural flow disruption, destruction of riparian tree and shrub vegetation, habitat fragmentation-fish populations isolation, organic/mining pollution activities, fish washing away at floods, and poaching.

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3

Gosselin, M. P., G. E. Petts, and I. P. Maddock. "Mesohabitat use by bullhead (Cottus gobio)." Hydrobiologia 652, no. 1 (July 11, 2010): 299–310. http://dx.doi.org/10.1007/s10750-010-0363-z.

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4

Bănăduc, Doru, Răzvan Voicu, Lee Jason Baumgartner, Saša Marić, Alexandru Dobre, and Angela Curtean-Bănăduc. "Technical Solutions to Mitigate Shifting Fish Fauna Zones Impacted by Long Term Habitat Degradation in the Bistra Mărui River – Study Case." Transylvanian Review of Systematical and Ecological Research 20, no. 3 (March 1, 2018): 75–114. http://dx.doi.org/10.2478/trser-2018-0021.

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Abstract The Bistra Mărului River fish fauna has been severely impacted by man-made activities, especially through longitudinal fragmentation, over the past 40 years. Fish fauna monitoring revealed structural changes and technical methods have been proposed, in order to restore the natural connectivity and the conservation of fish species. Benefits should accrue for key species: Salmo trutta fario, Cottus gobio, Thymallus thymallus, Eudontomyzon danfordi, Eudontomyzon vladykovi, Gobio uranoscopus, Barbus meridionalis, and Condrostoma nasus.

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5

Lepori, Fabio, Dirk Gaul, Daniel Palm, and Björn Malmqvist. "Food-web responses to restoration of channel heterogeneity in boreal streams." Canadian Journal of Fisheries and Aquatic Sciences 63, no. 11 (November 1, 2006): 2478–86. http://dx.doi.org/10.1139/f06-142.

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We assessed the biomass and stable-isotope composition (δ13C and δ15N) of consumers (aquatic insects and fish (Cottus gobio)) and potential food sources (detritus, biofilm, seston, algae, and mosses) in channelized and restored streams in Sweden, assessing the hypotheses that restoration enhances detritus storage and detritus-based secondary production. Restored sites stored more detritus than channelized sites, with differences (+5.4% on average) prominent in margins, i.e., the channel area within 1.4 m from the banks. The biomass of other resources was similar between restored and channelized sites. Most common aquatic insects, including several putative detritivores, showed δ13C values indicating reliance on aquatic (probably algal) carbon sources. The insectivorous fish Cottus gobio, on the contrary, appeared to be more dependent on terrestrial (detrital) carbon sources. The biomass and mean δ13C values of the consumers were similar between restored and channelized sites, suggesting that restoration did not increase net secondary production or the fraction of secondary production based on detritus. We concluded that the increase in detritus storage at restored sites was either insufficient to enhance detritus-based production or the consumers were not limited by the availability of detritus.

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6

Lahnsteiner, F., B. Berger, T. Weismann, and R. A. Patzner. "Sperm structure and motility of the freshwater teleost Cottus gobio." Journal of Fish Biology 50, no. 3 (March 1997): 564–74. http://dx.doi.org/10.1111/j.1095-8649.1997.tb01950.x.

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7

Davey, A. J. H., S. J. Hawkins, G. F. Turner, and C. P. Doncaster. "Size-dependent microhabitat use and intraspecific competition in Cottus gobio." Journal of Fish Biology 67, no. 2 (August 2005): 428–43. http://dx.doi.org/10.1111/j.0022-1112.2005.00736.x.

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8

Quaglio, F., V. Zappulli, L. Poppi, P. Capovilla, F. Capparucci, and F. Marino. "Squamous cell carcinoma in a wild European bullhead Cottus gobio." Diseases of Aquatic Organisms 122, no. 1 (November 22, 2016): 73–76. http://dx.doi.org/10.3354/dao03065.

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9

Vezza, Paolo, P. Parasiewicz, O. Calles, M. Spairani, and C. Comoglio. "Modelling habitat requirements of bullhead (Cottus gobio) in Alpine streams." Aquatic Sciences 76, no. 1 (September 12, 2013): 1–15. http://dx.doi.org/10.1007/s00027-013-0306-7.

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10

Maerten, Evelien, Marcel Eens, and Guy Knaepkens. "Performance of a pool-and-weir fish pass for small bottom-dwelling freshwater fish species in a regulated lowland river." Animal Biology 57, no. 4 (2007): 423–32. http://dx.doi.org/10.1163/157075607782232134.

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AbstractAlthough small benthic freshwater fish species are an important biological component of fish assemblages and free instream movement is indispensable for their survival, they are often neglected in fish pass performance studies. In this study, a capture-mark-recapture approach was used to assess whether small bottom-dwelling species, including gudgeon (Gobio gobio), stone loach (Barbatula barbatula), spined loach (Cobitis taenia) and bullhead (Cottus gobio), were able to cross a pool-and-weir fish pass in a regulated lowland river. Some tagged individuals of stone loach (18%), gudgeon (7%) and spined loach (2%) managed to successfully ascend the fish pass under study, despite the fact that water velocity levels in the different overflows of the facility (between 0.55-1.22 m/s) exceeded the critical swimming speed of all three species. Although this suggests that a pool-and-weir fish pass is a able to facilitate upstream movement of some small benthic species in a regulated river, more detailed research incorporating advanced tagging and retrieving techniques is necessary.

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11

Frilund, Gunn E., Jarl Koksvik, Anton Rikstad, and Hans M. Berger. "Cottus gobio (Linnaeus, 1758), a new fish-species in Nord-Trøndelag County, Norway." Fauna norvegica 29 (January 26, 2010): 55. http://dx.doi.org/10.5324/fn.v29i0.612.

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<p><span style="font-size: small;"><span style="font-family: Times New Roman;">Frilund GE, Koksvik J, Rikstad A and Berger HM. 20092009. Cottus gobio (Linnaeus, 1758), a new fish-species in Nord-Trøndelag County, Norway. Fauna Norvegica 29: 55-60.</span></span></p><p class="MsoNormal" style="margin: 0pt;"><span style="font-size: small; font-family: Times New Roman;"> </span></p><p class="MsoNormal" style="margin: 0pt;"><span style="font-size: small; font-family: Times New Roman;">Cottus gobio, a freshwater sculpin, was discovered by electrical fishing in rivers draining to Murusjøen in Lierne, Nord-Trøndelag County in the middle of Norway. Until now, this sculpin has only been found in a few river systems in the south-eastern and north-eastern parts of Norway. Species specific characters (glands and fins) were used to distinguish C. gobio from the close relative C. poecilopus. The sculpin dominated the catches in all the investigated rivers. In August 2008 in the River Fiskløysa, a total of 194 specimens were collected. Their length varied from 37 mm to 105 mm, indicating the presence of both juvenile (age 0) and adult individuals. In September 2008, qualitative sampling was conducted in another part of Fiskløysa and in the rivers Kveelva and Murubekken. In River Fiskløysa, the species was not registered above a presumably impassable waterfall about 1.6 km from Lake Murusjøen. In River Kveelva sculpins were caught below a nine meters moderate waterfall, close to the outlet of Lake Kvesjøen, but no sculpins were registered above the waterfall. This indicates that the waterfall is a possible barrier for further upstream dispersal into Lake Kvesjøen. Sculpins were also registered in River Murubekken.The paper discusses possibilities for C. gobio being spread naturally or artificially into the river systems in Lierne. It is predicted that the dispersal most likely has been natural from populations in Sweden, as there are no distinct barriers preventing the sculpin from spreading westwards. The time-period of the dispersal, however, is still unknown, and the sculpin may still be expanding its home range in these water systems.</span></p><p> </p>

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12

Riffel, Michael, and Arnd Schreiber. "Morphometric differentiation in populations of the Central European sculpin Cottus gobio L., a fish with deeply divergent genetic lineages." Canadian Journal of Zoology 76, no. 5 (May 1, 1998): 876–85. http://dx.doi.org/10.1139/z98-007.

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The morphological differentiation between four population collectives of the Central European sculpin Cottus gobio from southwestern Germany and adjacent France (the contact region of the Rhine, Danube, and Rhône drainage basins) was evaluated using multivariate analysis of 34 morphometric and 3 meristic characters. Body shape separated Neckarian and Danubian sculpins, Rhenish stocks taking a somewhat intermediate position. These morphological differences between populations from various drainage basins were slighter than the deeper allozyme differentiation observed in a previous study. However, both allozymes and morphometry indicated the same population groupings. It is concluded that C. gobio displays an accelerated rate of allozyme evolution, or that stabilizing selection conserves its phenotype despite ongoing evolution at the protein level. The morphological data do not support the distinction of species in the area of the Rhine/Danube watershed.

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13

Bănăduc, Doru, and Angela Curtean-Bănăduc. "Management Elements Proposal for Sutla Natura 2000 Site." Transylvanian Review of Systematical and Ecological Research 17, no. 1 (June 1, 2015): 143–52. http://dx.doi.org/10.1515/trser-2015-0055.

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Abstract Following the accession of Croatia to the EU, a study was carried out on a Croatian Natura 2000 site which includes habitats used by the following fish species of conservation interest: Eudontomyzon vladykovi, Rhodeus sericeus amarus, Gobio uranoscopus, Romanogobio kesslerii, Barbus meridionalis, Zingel streber and Cottus gobio. Harmful effects on fish fauna were found due to: poorly-integrated water management, over-extraction of water for irrigation, fragmentation of riparian vegetation, low cooperation between environment institutions in Croatia and Slovenia, abuse of pesticides, uncontrolled waste water, sources of chemicals and heavy metals, leakage of nitrogen, habitats fragmentation due to dams and canals, non-native fish species, invasive species and gravel extraction. Specific management actions are proposed that take account of the different fish species of conservation interest and their specific biological and ecological requirements.

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14

Ladich, F. "Sound production by the river bullhead, Cottus gobio L. (Cottidae, Teleostei)." Journal of Fish Biology 35, no. 4 (October 1989): 531–38. http://dx.doi.org/10.1111/j.1095-8649.1989.tb03004.x.

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15

SMYLY, W. J. P. "THE LIFE-HISTORY OF THE BULLHEAD OR MILLER'S THUMB (COTTUS GOBIO L.)." Proceedings of the Zoological Society of London 128, no. 3 (August 20, 2009): 431–54. http://dx.doi.org/10.1111/j.1096-3642.1957.tb00336.x.

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16

Dorts, J., P. Kestemont, M. Dieu, M. Raes, and F. Silvestre. "Sub-lethal cadmium toxicity in bullhead Cottus gobio. Biochemical and proteomic approaches." Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 154, no. 1 (September 2009): S17. http://dx.doi.org/10.1016/j.cbpa.2009.05.061.

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17

Cismaş, Cristina, Doru Bănăduc, Voicu Răzvan, and Curtean-Bănăduc Angela. "Cottus gobio Linnaeus, 1758 Community Interest Species Conservation in Upper Târnava Mare River Basin, Through Fish Populations Rehabilitation for Brown Trout Zone Based on a Decision-Support Management System." Management of Sustainable Development 9, no. 2 (December 1, 2017): 5–10. http://dx.doi.org/10.1515/msd-2017-0015.

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Abstract The ADONIS: CE software has been used for two fish species, Cottus gobio, of conservation interest and Salmo trutta fario, of economic interest, to design an on-site (upper Târnava Mare River) adapted support-system model for management decision-making. Habitat needs and indicators of favourable conservation status have been investigated, pressures and threats to these fish species have been determined, and management elements have been suggested. This management system allows the proper organization of management measures for the renaturation of the local natural fish associations in the local brown trout zone.

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18

NOLTE, ARNE W., KATHRYN C. STEMSHORN, and DIETHARD TAUTZ. "Direct cloning of microsatellite loci from Cottus gobio through a simplified enrichment procedure." Molecular Ecology Notes 5, no. 3 (September 2005): 628–36. http://dx.doi.org/10.1111/j.1471-8286.2005.01026.x.

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19

Ladich, Friedrich. "Vocalization during Agonistic Behaviour in Cottus gobio L. (Cottidae): An Acoustic Threat Display." Ethology 84, no. 3 (April 26, 2010): 193–201. http://dx.doi.org/10.1111/j.1439-0310.1990.tb00797.x.

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20

Ieshko, E. P., B. S. Shul’man, D. I. Lebedeva, Yu Yu Barskaya, and E. Niemela. "Bullhead (Cottus gobio L.) invasion in the Utsjoki River (Northern Finland): Parasitological aspects." Russian Journal of Biological Invasions 4, no. 1 (January 2013): 17–23. http://dx.doi.org/10.1134/s2075111713010049.

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21

Andersson, K. G., C. Brönmark, J. Herrmann, B. Malmqvist, C. Otto, and P. Sjörström. "Presence of sculpins (Cottus gobio) reduces drift and activity of Gammarus pulex (Amphipoda)." Hydrobiologia 133, no. 3 (March 1986): 209–15. http://dx.doi.org/10.1007/bf00005592.

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22

Dorts, Jennifer, Patrick Kestemont, Marc Dieu, Martine Raes, and Frédéric Silvestre. "Proteomic Response to Sublethal Cadmium Exposure in a Sentinel Fish Species,Cottus gobio." Journal of Proteome Research 10, no. 2 (February 4, 2011): 470–78. http://dx.doi.org/10.1021/pr100650z.

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23

Kielbassa, J., M. L. Delignette-Muller, D. Pont, and S. Charles. "Application of a temperature-dependent von Bertalanffy growth model to bullhead (Cottus gobio)." Ecological Modelling 221, no. 20 (October 2010): 2475–81. http://dx.doi.org/10.1016/j.ecolmodel.2010.07.001.

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24

Pont, D., B. Hugueny, and T. Oberdorff. "Modelling habitat requirement of European fishes: do species have similar responses to local and regional environmental constraints?" Canadian Journal of Fisheries and Aquatic Sciences 62, no. 1 (January 1, 2005): 163–73. http://dx.doi.org/10.1139/f04-183.

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To test the hypothesis that different species have similar responses to local and regional environmental constraints, we modelled the occurrences of 13 species using a data set of 413 undisturbed river reaches. Three environmental descriptors were considered at the local scale (river slope, river width, and upstream drainage area) and three at the regional scale (mean annual and mean range air temperature and basin unit). Using multiple logistic regression modelling techniques, we correctly predicted the occurrence of 11 of the 13 retained species. The hierarchical partitioning analysis that we used allowed us to jointly consider all possible models in a multiple regression setting and to evaluate the independent explanatory power of each of our five environmental variables. We reject the hypothesis of a common species response to the environmental constraints. Species inhabiting upstream river reaches (bullhead (Cottus gobio), brown trout (Salmo trutta), minnow (Phoxinus phoxinus), and stone loach (Barbatula barbatula)) are more sensitive to basin unit. All species representative of downstream areas (barbel (Barbus barbus), dace (Leuciscus leuciscus), chub (Leuciscus cephalus), gudgeon (Gobio gobio), roach (Rutilus rutilus), bleak (Alburnus alburnus), and perch (Perca fluviatilis)) exhibit a positive continuous response to the drainage area, in agreement with the view of a continuous increase of local richness downstream. River slope is an important variable for all species. Main species habitat requirements are discussed for each species.

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25

Marconato, Andrea, and Angelo Bisazza. "Males whose nests contain eggs are preferred by female Cottus gobio L. (Pisces, Cottidae)." Animal Behaviour 34, no. 5 (October 1986): 1580–82. http://dx.doi.org/10.1016/s0003-3472(86)80234-2.

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26

Marconato, A., and A. Bisazza. "Mate choice, egg cannibalism and reproductive success in the river bullhead, Cottus gobio L." Journal of Fish Biology 33, no. 6 (December 1988): 905–16. http://dx.doi.org/10.1111/j.1095-8649.1988.tb05539.x.

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27

Kielbassa, J., S. Charles, and M. L. Delignette-Muller. "The importance of incorporating age and sex when backcalculating length in bullhead Cottus gobio." Journal of Fish Biology 78, no. 5 (May 2011): 1492–507. http://dx.doi.org/10.1111/j.1095-8649.2011.02956.x.

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28

Legalle, Milène, Sylvain Mastrorillo, Frédéric Santoul, and Régis Céréghino. "Ontogenetic Microhabitat Shifts in the Bullhead,Cottus gobio L.,in a Fast Flowing Stream." International Review of Hydrobiology 90, no. 3 (June 2005): 310–21. http://dx.doi.org/10.1002/iroh.200410781.

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29

Kontula, Tytti, and Risto VÄinölä. "Postglacial colonization of Northern Europe by distinct phylogeographic lineages of the bullhead,Cottus gobio." Molecular Ecology 10, no. 8 (August 2001): 1983–2002. http://dx.doi.org/10.1046/j.1365-294x.2001.01328.x.

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30

Hanfling, B., B. Hellemans, F. A. M. Volckaert, and G. R. Carvalho. "Late glacial history of the cold-adapted freshwater fish Cottus gobio, revealed by microsatellites." Molecular Ecology 11, no. 9 (September 2002): 1717–29. http://dx.doi.org/10.1046/j.1365-294x.2002.01563.x.

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31

Van Liefferinge, C., P. Seeuws, P. Meire, and R. F. Verheyen. "Microhabitat use and preferences of the endangered Cottus gobio in the River Voer, Belgium." Journal of Fish Biology 67, no. 4 (October 2005): 897–909. http://dx.doi.org/10.1111/j.0022-1112.2005.00782.x.

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32

Jansen, W., J. Tham, S. Watzke, and H. Rahmann. "Habitats and densities of bullhead (Cottus gobio L.) in a South German bog stream." SIL Proceedings, 1922-2010 27, no. 5 (December 2000): 3021–24. http://dx.doi.org/10.1080/03680770.1998.11898231.

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33

Dorts, J., P. Kestemont, M. Dieu, M. Raes, and F. Silvestre. "Does global warming modulate susceptibility to pollutants in a sentinel fish species, Cottus gobio?" Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 157 (September 2010): S44. http://dx.doi.org/10.1016/j.cbpa.2010.06.123.

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34

Pastorino, Paolo, Marco Bertoli, Manuel Kušće, Piero Giulio Giulianini, Vasco Menconi, Marino Prearo, and Elisabetta Pizzul. "Liver Lipid Accumulation in European Bullhead (Cottus cobio) from a High-Mountain Lake: An Adaptive Strategy to Survive the Adverse Winter Season." Diversity 12, no. 12 (November 24, 2020): 442. http://dx.doi.org/10.3390/d12120442.

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The hypothesis that liver lipid accumulation in fish is an adaptive strategy to survive the winter in the high-altitude environment was assessed in this study. During summer 2019, specimens of Cottus gobio were sampled in 15 watercourses of Friuli Venezia-Giulia Region (Italy) to verify if hepatic steatosis is or not normally present in the species. To do this, hepatic vacuolization was assessed by histology using a semiquantitative score. Furthermore, C. gobio were also captured during the ice-free season at Dimon Lake (1872 m a.s.l.) and But Stream (520 m a.s.l.) to compare the trend in lipid accumulation: water temperature, hepatosomatic index (HSI), gonadosomatic index (GSI), Fulton’s condition factor (K), and lipid area percentage (lipid %) were measured monthly. Findings revealed that liver steatosis is rather common in C. gobio. However, the trend in lipid accumulation of this species differed between Dimon Lake and But Stream. Based on the HSI and the GSI, the reproductive cycles differed in fish from the two environments (April–May in But Stream; May–June in Dimon Lake). While K values remained unchanged in the But Stream specimens, significant changes were recorded for Dimon specimens. The increase in lipid % from July to August in the Dimon Lake specimens coincided with greater food availability. With the rapid drop in lake water temperature in October, the lipid % decreased due to slower metabolic rate and lipid utilization from liver stores. There was a slight decrease in lipid % in the But Stream specimens, indicating that lipids were not being accumulated. Introduced years ago, the Dimon Lake bullhead population has since adapted to the winter conditions at high elevation.

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35

Nolte, Arne W., Jörg Freyhof, Kathryn C. Stemshorn, and Diethard Tautz. "An invasive lineage of sculpins, Cottus sp. (Pisces, Teleostei) in the Rhine with new habitat adaptations has originated from hybridization between old phylogeographic groups." Proceedings of the Royal Society B: Biological Sciences 272, no. 1579 (September 16, 2005): 2379–87. http://dx.doi.org/10.1098/rspb.2005.3231.

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Fish abundance surveys in the Rhine system have shown in the past two decades that there is a rapid upriver invasion of a freshwater sculpin of the genus Cottus . These fish are found in habitats that are atypical for the known species Cottus gobio , which is confined to small cold streams within the Rhine drainage. Phylogeographic analysis based on mitochondrial haplotypes and diagnostic single nucleotide polymorphisms indicates that the invasive sculpins are hybrids between two old lineages from the River Scheldt drainage and the River Rhine drainage, although it is morphologically more similar to the Scheldt sculpins. Most importantly, however, the invasive population possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have previously been free of sculpins. Microsatellite analysis shows that the new lineage is genetically intermediate between the old lineages and that it forms a distinct genetic group across its whole expansion range. We conclude that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage.

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36

Knaepkens, G., L. Bruyndoncx, and M. Eens. "Assessment of residency and movement of the endangered bullhead (Cottus gobio) in two Flemish rivers." Ecology of Freshwater Fish 13, no. 4 (December 2004): 317–22. http://dx.doi.org/10.1111/j.1600-0633.2004.00065.x.

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37

Dorts, Jennifer, Patrick Kestemont, Pierre-André Marchand, Wendy D’Hollander, Marie-Laetitia Thézenas, Martine Raes, and Frédéric Silvestre. "Ecotoxicoproteomics in gills of the sentinel fish species, Cottus gobio, exposed to perfluorooctane sulfonate (PFOS)." Aquatic Toxicology 103, no. 1-2 (May 2011): 1–8. http://dx.doi.org/10.1016/j.aquatox.2011.01.015.

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38

Dorts, Jennifer, Gaël Grenouillet, Jessica Douxfils, Syaghalirwa N. M. Mandiki, Sylvain Milla, Frédéric Silvestre, and Patrick Kestemont. "Evidence that elevated water temperature affects the reproductive physiology of the European bullhead Cottus gobio." Fish Physiology and Biochemistry 38, no. 2 (June 3, 2011): 389–99. http://dx.doi.org/10.1007/s10695-011-9515-y.

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39

LAGRUE, C., A. GÜVENATAM, and L. BOLLACHE. "Manipulative parasites may not alter intermediate host distribution but still enhance their transmission: field evidence for increased vulnerability to definitive hosts and non-host predator avoidance." Parasitology 140, no. 2 (October 15, 2012): 258–65. http://dx.doi.org/10.1017/s0031182012001552.

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SUMMARYBehavioural alterations induced by parasites in their intermediate hosts can spatially structure host populations, possibly resulting in enhanced trophic transmission to definitive hosts. However, such alterations may also increase intermediate host vulnerability to non-host predators. Parasite-induced behavioural alterations may thus vary between parasite species and depend on each parasite definitive host species. We studied the influence of infection with 2 acanthocephalan parasites (Echinorhynchus truttae and Polymorphus minutus) on the distribution of the amphipod Gammarus pulex in the field. Predator presence or absence and predator species, whether suitable definitive host or dead-end predator, had no effect on the micro-distribution of infected or uninfected G. pulex amphipods. Although neither parasite species seem to influence intermediate host distribution, E. truttae infected G. pulex were still significantly more vulnerable to predation by fish (Cottus gobio), the parasite's definitive hosts. In contrast, G. pulex infected with P. minutus, a bird acanthocephalan, did not suffer from increased predation by C. gobio, a predator unsuitable as host for P. minutus. These results suggest that effects of behavioural changes associated with parasite infections might not be detectable until intermediate hosts actually come in contact with predators. However, parasite-induced changes in host spatial distribution may still be adaptive if they drive hosts into areas of high transmission probabilities.

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Sideleva, V. G. "A Review of Sculpins (COTTOIDEI) of Middle Asia with a Revalidation of the Species Cottus jaxartensis and Description of a New Species Cottus nudus sp. nova." Journal of Ichthyology 61, no. 3 (May 2021): 327–38. http://dx.doi.org/10.1134/s0032945221030115.

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Abstract— Based on the investigations of the representatives of the genus Cottus from Middle Asia, the species status of C. spinulosus is supported, and its diagnostic characters are specified. The validity of С.jaxartensis is resumed and a degree of its distinction from C. gobio is evaluated. A comparative analysis of morphological characters of the C. nasalis holotype and С.jaxartensis specimens of the same body size shows identity of these species, and, thus, C.nasalis has been included in the synonymy of C.jaxartensis. A new species C. nudus sp. nova is described. The representatives of this species differ from other Asian species of the genus in the following characters: absence of bony spickles nd dermal tubercles on the skin of the head and trunk; elongated upper jaw terminated near the vertical through posterior margin of orbit; presence of teeth on palatine bones; short sensory canal on the trunk with 23 pores; monochrome light coloration of the fins; and widened distal ends of neural and/or hemal spines in seven caudal centra. A key for the identification of three Middle Asian species (C. spinulosus, C. jaxartensis, and C.nudus sp. nova) is given.

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Vítek, T., K. Halačka, E. Bartoňová-Marešová, L. Vetešník, and P. Spurný. "Identification of natural hybrids between Cottus poecilopus, Heckel, 1837, and Cottus gobio, Linnaeus, 1758, at a hybrid zone on the Svratka River (Czech Republic)." Journal of Applied Ichthyology 30, no. 1 (October 31, 2013): 102–8. http://dx.doi.org/10.1111/jai.12263.

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Edwards, F. K., R. B. Lauridsen, C. P. Duerdoth, and J. I. Jones. "Dry and ash-free dry mass to length relationships of bullhead (Cottus gobio L.)." Fundamental and Applied Limnology / Archiv für Hydrobiologie 172, no. 4 (September 1, 2008): 315–16. http://dx.doi.org/10.1127/1863-9135/2008/0172-0315.

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ELLIOTT, J. M., and J. A. ELLIOTT. "The critical thermal limits for the bullhead, Cottus gobio, from three populations in north-west England." Freshwater Biology 33, no. 3 (June 1995): 411–18. http://dx.doi.org/10.1111/j.1365-2427.1995.tb00403.x.

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Junker, Julian, Armin Peter, Catherine E. Wagner, Salome Mwaiko, Brigitte Germann, Ole Seehausen, and Irene Keller. "River fragmentation increases localized population genetic structure and enhances asymmetry of dispersal in bullhead (Cottus gobio)." Conservation Genetics 13, no. 2 (January 29, 2012): 545–56. http://dx.doi.org/10.1007/s10592-011-0306-x.

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Feist, S. W., M. Longshaw, R. H. Hurrell, and B. Mander. "Observations of Dermocystidium sp. infections in bullheads, Cottus gobio L., from a river in southern England." Journal of Fish Diseases 27, no. 4 (April 2004): 225–31. http://dx.doi.org/10.1111/j.1365-2761.2004.00535.x.

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Dorts, Jennifer, Aurélie Bauwin, Patrick Kestemont, Sabrina Jolly, Wilfried Sanchez, and Frédéric Silvestre. "Proteasome and antioxidant responses in Cottus gobio during a combined exposure to heat stress and cadmium." Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology 155, no. 2 (March 2012): 318–24. http://dx.doi.org/10.1016/j.cbpc.2011.10.003.

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Števove, Barbora, Miroslava Babeľová, Danka Haruštiaková, and Vladimír Kováč. "When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio)." Science of The Total Environment 651 (February 2019): 1903–12. http://dx.doi.org/10.1016/j.scitotenv.2018.10.068.

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Pastorino, Paolo, Marino Prearo, Elisabetta Pizzul, Marco Bertoli, Danila Raffaella Francese, Vasco Menconi, Davide Mugetti, Elena Bozzetta, and Katia Varello. "Hepatic Steatosis in a Bullhead (Cottus gobio) Population from a High-Mountain Lake (Carnic Alps): Adaptation to an Extreme Ecosystem?" Water 11, no. 12 (December 5, 2019): 2570. http://dx.doi.org/10.3390/w11122570.

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The aim of this study was to describe liver alterations observed in a bullhead (Cottus gobio) population from a high-mountain lake (Dimon Lake; 1857 m a.s.l.) located in Carnic Alps (Northeast Italy). Two fish sampling campaigns (summer and autumn) were performed in 2017 to explore the possible causes of this phenomenon. In addition, to investigate the typical liver features of C. gobio, control specimens were captured from Degano Creek in the same seasons. Total length, weight, and liver weight were recorded in fish from both sampling sites. In addition, Fulton’s condition factor (K) and hepatosomatic index (HSI) were calculated. Stomach contents were also analyzed. Liver from each specimen was sampled, and histological examination was carried out. Liver steatosis (L) (nuclear displacement and cytoplasm vacuolization) were histologically evaluated by assigning a semiquantitative severity score. A significant difference in L was found between Dimon Lake and Degano Creek in both summer (Mann–Whitney test; p = 0.0001) and autumn (Mann–Whitney test; p < 0.0001). Regarding HSI, a significant difference was also recorded between Dimon Lake and Degano Creek in summer (Mann–Whitney test; p < 0.0001) and also in autumn (Mann–Whitney test; p < 0.0001), but no seasonal change in K values was recorded between the two sites in both summer (Mann–Whitney test; p = 0.8589) and autumn (Mann–Whitney test; p = 0.6415). A significant positive correlation between HSI and L was found (ρS 0.573). The causes of this abnormality might be related to adaptation by the fish to the high-altitude environment, accumulating lipids in the liver to tackle the adverse season, which lasts for 6 months of the year. Nonetheless, our study does not preclude steatosis induced by a nearly exclusive chironomids diet in bullhead from Dimon Lake.

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Riffel, M., and A. Schreiber. "Coarse-grained population structure in Central European sculpin (Cottus gobio L.): secondary contact or ongoing genetic drift?" Journal of Zoological Systematics and Evolutionary Research 33, no. 2 (April 27, 2009): 173–84. http://dx.doi.org/10.1111/j.1439-0469.1995.tb00223.x.

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Riffel, M., and A. Schreiber. "Coarse-grained population structure in Central European sculpin (Cottus gobio L.): secondary contact or ongoing genetic drift?" Journal of Zoological Systematics and Evolutionary Research 33, no. 3-4 (April 27, 2009): 173–84. http://dx.doi.org/10.1111/j.1439-0469.1995.tb00970.x.

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